Pendulum-escapement for clocks



(No Model.)

W. HART.

' PENDULUM ESOAPEMBNT FOR CLOCKS.

No. 326,292. Patented Sept. 15, 1885.

W mssns: INVENTOR: QM M5 BY id ATTORNEYS.

UNITED STATES PATENT OFFICE.

WILLIAM HART, OF KIRKSVILLE, MISSOURI.

PENDULUM-ESCAPEM ENT FO R CLOCKS.

SPECIFICATION forming part of Letters Patent No. 326,292, dated September 15, 1885.

Application filed August 30, 1884.

To all whom it may concern.-

Be it known that I, WVILLIAM HART, of Kirksville, in the county of Adair and State of Missouri, have invented a new and useful Improvement in Pendulum-Escapements for Clock-Work, of which the following is a full, clear, and exact description.

My invention consists in a detached pendulum-escapement adapted for use with timekeepers, and also when it is desired to utilize the swing of the pendulum for any purpose, as hereinafter described.

Reference is to be had to the accompanying drawing, forming a part of this specification, in which the device is shown by a front elevation.

A. is the eseapement-whecl. B B are the pallets. O is an arm projecting from the pal- 1et-piece or its arbor, and made with its upper end forked. The forked ends are made with outwardly-projecting prongs a.

D is the pendulum, having a bob, I), adjustable by a screw, and on the lower end of the rod is a fixed bar, d, that is curved in the are of oscillation. The pendulum is so hung that the bar cl moves closely over the prong a at each side, and the fork is thus prevented from swinging in advance of its movement by the pendulum.

The escapement wheel being driven by springs or weights, the operation is as follows: From its position, as shown, the pendulum swings to the right until the end of bar (2, striking the fork of arm 0, raises the engaged pallet from the tooth of the wheel, and the tooth, moving over the inclined lower surface, 6, of the pallet, gives an impulse to the pendu- (No model.)

lum by contact of the rear fork with the back end of bar (Z until the arm 0 is arrested by the banking-pin f, when the other pallet engages the wheel and the pendulum passes to its extreme position.

The escapement being thus applied to the lower end of the pendulum and the pendulum also detached therefrom, less power is required to swing the pendulum, and the time can be kept more regular; also, in time-pieces or clocks the works are brought down to a more accessible position for winding or examination.

By hanging shelves on the pendulum, so as to swing with it, the device will form an attractive means for display of goods in show-wi dows.

The escapement wheel and lever may be fitted to operate at any point in the length of the pendulum in like manner.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. The combination, with a vibrating pendu lum, of an escapement adapted to act on the swinging end of the pendulum for imparting motion thereto, substantially as described.

2. The forked arm 0 and pallets B B, combined with pendulum D and wheel A below the pendulum, substantially as described.

3. The combination of pendulum D, bar d, forked arm 0, having prongs a, pallets B B, and wheel A, combined for operation substantially as described.

W I LLIAH H ART. \Vitnesses:

MYRoN A. MILLER, Rom. L. DARROW. 

